The samples for flotation were taken from on-site samples of flotation, which were ground to 95% passing 0.045 mm, and contained 34.90% specularite
and hematite, 8.70% magnetite, 0.20% limonite, 39.40% quartz, 11.40% chlorite and hornblende, and 4.90% calcite and dolomite.
Based on physical characteristics, the chemical adsorption principle, and the reductive degradation principle, tourmaline powder, pyrite powder, and specularite
powder, here denoted as T, P, and S, respectively, are selected as basic materials to develop new asphalt modifiers, which could reduce the pollutant emission of hot mix asphalt.
Ils se deplacent dans un espace sans bornes ou les divisions cartographiques sont eclatees, ou les frontieres temporelles s'effritent a chaque instant, ou le commencement et la fin se court-circuitent, ou l'apres antecede l'avant, ou les temps archaiques s'entrelacent, dans un jeu de specularite
permanent, avec l'ere moderne.
These are hosting the iron ore containing magnetite hematite specularite
and ilmenite (Fig.
There is no gold at Tsodilo, but massive quantities of both platy quartz vein and granular micaceous specularite
were mined there at this time; a series of radiocarbon ages indicates that mining, complete with tunnels and inclined shafts, was intensive during the period c.AD 750-1025 (Robbins et al.
D'autres experiences encore essayaient de faire jouer certains modeles narratifs conventionnels les uns contre les autres, afin d'elargir le champ de la specularite
textuelle et ainsi de mettre la litterature elle-meme en proces.
"Les epigraphes de Borges, speculation et specularite
Sometimes hematite of small crystal size, called "specularite
" by the miners, was found throughout an orebody--however, very few fine examples were collected during the life of the mine (personal communication, Raymond Clements).